Global Patent Index - EP 0937897 A3

EP 0937897 A3 2000-01-19 - Damping device for a hydraulic actuating system

Title (en)

Damping device for a hydraulic actuating system

Title (de)

Dämpfungsglied für hydraulische Verstelleinrichtungen bei Kraftfahrzeugen

Title (fr)

Elément amortisseur pour un dispositif de commande hydraulique

Publication

EP 0937897 A3 (DE)

Application

EP 98124183 A

Priority

DE 19807446 A

Abstract (en)

[origin: EP0937897A2] The damper member (7) consists of at least one disc (4), with at least one first and one second spring plate (5,6). The disc has flow apertures (12) with ends covered by the spring plates. Disc and plate form a pre-assembled unit. The disc is positively connected to the cylinder chamber (8), esp. by ultrasonic welding. The spring plates are fixed by a variable support element, esp. a bimetal or memory element. This thermally variable element alters the valve characteristics when falling below a defined temperature limit, and acts against increasing viscosity of the fluid.

IPC 1-7 (main, further and additional classification)

F15B 7/08; B60T 8/40

IPC 8 full level (invention and additional information)

B60T 11/10 (2006.01); F15B 7/00 (2006.01); F16D 25/12 (2006.01)

CPC (invention and additional information)

F15B 21/008 (2013.01); B60T 11/10 (2013.01); F15B 7/00 (2013.01); F16D 25/12 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0937897 A2 19990825; EP 0937897 A3 20000119; EP 0937897 B1 20041117; DE 19807446 A1 19990902; DE 19807446 B4 20040909; US 6343541 B1 20020205